Tire Size Box

195/80R13 vs 195/85R13

195/85R13 compared with 195/80R13

+3.0% diameter, 0.0" width

195/85R13 is 26.05" tall vs 25.28". More than the 3% rule of thumb, so check carefully before switching.

25.3"13" rim6.1"7.7" wide
195/80R13 (solid) compared with 195/85R13 (dashed outline), drawn to scale

With 195/85R13 tires, when your speedometer says 60 mph you are really going

61.8 mph

195/85R13 is +0.77 inches (+3.0%) in overall diameter. That is more than the 3% most shops and makers recommend.

195/80R13195/85R13Difference%
Overall diameter25.28"26.05"+0.77"+3.0%
Section width7.68"7.68"0.00"0.0%
Sidewall height6.14"6.53"+0.38"+6.3%
Circumference79.43"81.84"+2.41"+3.0%
Revolutions per mile797.7774.2−23.5−2.9%

Speedometer difference

If your vehicle came with 195/80R13 and you fit 195/85R13, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.6 mph+0.6 mph
30 mph30.9 mph+0.9 mph
40 mph41.2 mph+1.2 mph
50 mph51.5 mph+1.5 mph
60 mph61.8 mph+1.8 mph
65 mph67.0 mph+2.0 mph
70 mph72.1 mph+2.1 mph
75 mph77.3 mph+2.3 mph
80 mph82.4 mph+2.4 mph

Each size on its own

Questions

Which is bigger, 195/80R13 or 195/85R13?
195/85R13 is taller by 0.77 inches (26.05" vs 25.28"). 195/80R13 is the same width.
Can I replace 195/80R13 with 195/85R13?
It is not recommended without checking carefully. The diameter difference is +3.0%, more than the 3% most shops and makers allow. It will throw off the speedometer and may affect ABS, stability control and clearance.
How much will 195/85R13 change my speedometer?
When your speedometer reads 60 mph with 195/85R13 fitted (calibrated for 195/80R13), your real speed is 61.8 mph. Your odometer will under-count miles by about 3.0%.
Will 195/85R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.38 inches of ground clearance at the axle.

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